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-rw-r--r--arch/arm/mach-at91/Kconfig5
-rw-r--r--arch/arm/mach-at91/Makefile2
-rw-r--r--arch/arm/mach-at91/at91sam9g45_devices.c56
-rw-r--r--arch/arm/mach-at91/board-eco920.c158
-rw-r--r--arch/arm/mach-at91/board-sam9m10g45ek.c1
-rw-r--r--arch/arm/mach-at91/cpuidle.c94
-rw-r--r--arch/arm/mach-at91/include/mach/board.h1
-rw-r--r--arch/arm/mach-at91/pm.c62
-rw-r--r--arch/arm/mach-at91/pm.h67
9 files changed, 388 insertions, 58 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 2fd88437348..c71e39ed092 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -163,6 +163,11 @@ config MACH_CPUAT91
Select this if you are using the Eukrea Electromatique's
CPUAT91 board <http://www.eukrea.com/>.
+config MACH_ECO920
+ bool "eco920"
+ help
+ Select this if you are using the eco920 board
+
endif
# ----------------------------------------------------------
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index ada440aab0c..709fbad4a3e 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_MACH_PICOTUX2XX) += board-picotux200.o
obj-$(CONFIG_MACH_ECBAT91) += board-ecbat91.o
obj-$(CONFIG_MACH_YL9200) += board-yl-9200.o
obj-$(CONFIG_MACH_CPUAT91) += board-cpuat91.o
+obj-$(CONFIG_MACH_ECO920) += board-eco920.o
# AT91SAM9260 board-specific support
obj-$(CONFIG_MACH_AT91SAM9260EK) += board-sam9260ek.o
@@ -77,6 +78,7 @@ obj-y += leds.o
# Power Management
obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_AT91_SLOW_CLOCK) += pm_slowclock.o
+obj-$(CONFIG_CPU_IDLE) += cpuidle.o
ifeq ($(CONFIG_PM_DEBUG),y)
CFLAGS_pm.o += -DDEBUG
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 332b784050b..a57af3e99c7 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -131,6 +131,62 @@ void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
/* --------------------------------------------------------------------
+ * USB Host HS (EHCI)
+ * Needs an OHCI host for low and full speed management
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
+static u64 ehci_dmamask = DMA_BIT_MASK(32);
+static struct at91_usbh_data usbh_ehci_data;
+
+static struct resource usbh_ehci_resources[] = {
+ [0] = {
+ .start = AT91SAM9G45_EHCI_BASE,
+ .end = AT91SAM9G45_EHCI_BASE + SZ_1M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = AT91SAM9G45_ID_UHPHS,
+ .end = AT91SAM9G45_ID_UHPHS,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device at91_usbh_ehci_device = {
+ .name = "atmel-ehci",
+ .id = -1,
+ .dev = {
+ .dma_mask = &ehci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &usbh_ehci_data,
+ },
+ .resource = usbh_ehci_resources,
+ .num_resources = ARRAY_SIZE(usbh_ehci_resources),
+};
+
+void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data)
+{
+ int i;
+
+ if (!data)
+ return;
+
+ /* Enable VBus control for UHP ports */
+ for (i = 0; i < data->ports; i++) {
+ if (data->vbus_pin[i])
+ at91_set_gpio_output(data->vbus_pin[i], 0);
+ }
+
+ usbh_ehci_data = *data;
+ at91_clock_associate("uhphs_clk", &at91_usbh_ehci_device.dev, "ehci_clk");
+ platform_device_register(&at91_usbh_ehci_device);
+}
+#else
+void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data) {}
+#endif
+
+
+/* --------------------------------------------------------------------
* USB HS Device (Gadget)
* -------------------------------------------------------------------- */
diff --git a/arch/arm/mach-at91/board-eco920.c b/arch/arm/mach-at91/board-eco920.c
new file mode 100644
index 00000000000..295a96609e7
--- /dev/null
+++ b/arch/arm/mach-at91/board-eco920.c
@@ -0,0 +1,158 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/board.h>
+#include <mach/at91rm9200_mc.h>
+#include "generic.h"
+
+static void __init eco920_map_io(void)
+{
+ at91rm9200_initialize(18432000, AT91RM9200_PQFP);
+
+ /* Setup the LEDs */
+ at91_init_leds(AT91_PIN_PB0, AT91_PIN_PB1);
+
+ /* DBGU on ttyS0. (Rx & Tx only */
+ at91_register_uart(0, 0, 0);
+
+ /* set serial console to ttyS0 (ie, DBGU) */
+ at91_set_serial_console(0);
+}
+
+static void __init eco920_init_irq(void)
+{
+ at91rm9200_init_interrupts(NULL);
+}
+
+static struct at91_eth_data __initdata eco920_eth_data = {
+ .phy_irq_pin = AT91_PIN_PC2,
+ .is_rmii = 1,
+};
+
+static struct at91_usbh_data __initdata eco920_usbh_data = {
+ .ports = 1,
+};
+
+static struct at91_udc_data __initdata eco920_udc_data = {
+ .vbus_pin = AT91_PIN_PB12,
+ .pullup_pin = AT91_PIN_PB13,
+};
+
+static struct at91_mmc_data __initdata eco920_mmc_data = {
+ .slot_b = 0,
+ .wire4 = 0,
+};
+
+static struct physmap_flash_data eco920_flash_data = {
+ .width = 2,
+};
+
+static struct resource eco920_flash_resource = {
+ .start = 0x11000000,
+ .end = 0x11ffffff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device eco920_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &eco920_flash_data,
+ },
+ .resource = &eco920_flash_resource,
+ .num_resources = 1,
+};
+
+static struct resource at91_beeper_resources[] = {
+ [0] = {
+ .start = AT91RM9200_BASE_TC3,
+ .end = AT91RM9200_BASE_TC3 + 0x39,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device at91_beeper = {
+ .name = "at91_beeper",
+ .id = 0,
+ .resource = at91_beeper_resources,
+ .num_resources = ARRAY_SIZE(at91_beeper_resources),
+};
+
+static struct spi_board_info eco920_spi_devices[] = {
+ { /* CAN controller */
+ .modalias = "tlv5638",
+ .chip_select = 3,
+ .max_speed_hz = 20 * 1000 * 1000,
+ .mode = SPI_CPHA,
+ },
+};
+
+static void __init eco920_board_init(void)
+{
+ at91_add_device_serial();
+ at91_add_device_eth(&eco920_eth_data);
+ at91_add_device_usbh(&eco920_usbh_data);
+ at91_add_device_udc(&eco920_udc_data);
+
+ at91_add_device_mmc(0, &eco920_mmc_data);
+ platform_device_register(&eco920_flash);
+
+ at91_sys_write(AT91_SMC_CSR(7), AT91_SMC_RWHOLD_(1)
+ | AT91_SMC_RWSETUP_(1)
+ | AT91_SMC_DBW_8
+ | AT91_SMC_WSEN
+ | AT91_SMC_NWS_(15));
+
+ at91_set_A_periph(AT91_PIN_PC6, 1);
+
+ at91_set_gpio_input(AT91_PIN_PA23, 0);
+ at91_set_deglitch(AT91_PIN_PA23, 1);
+
+/* Initialization of the Static Memory Controller for Chip Select 3 */
+ at91_sys_write(AT91_SMC_CSR(3),
+ AT91_SMC_DBW_16 | /* 16 bit */
+ AT91_SMC_WSEN |
+ AT91_SMC_NWS_(5) | /* wait states */
+ AT91_SMC_TDF_(1) /* float time */
+ );
+
+ at91_clock_associate("tc3_clk", &at91_beeper.dev, "at91_beeper");
+ at91_set_B_periph(AT91_PIN_PB6, 0);
+ platform_device_register(&at91_beeper);
+
+ at91_add_device_spi(eco920_spi_devices, ARRAY_SIZE(eco920_spi_devices));
+}
+
+MACHINE_START(ECO920, "eco920")
+ /* Maintainer: Sascha Hauer */
+ .phys_io = AT91_BASE_SYS,
+ .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+ .boot_params = AT91_SDRAM_BASE + 0x100,
+ .timer = &at91rm9200_timer,
+ .map_io = eco920_map_io,
+ .init_irq = eco920_init_irq,
+ .init_machine = eco920_board_init,
+MACHINE_END
diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c
index 64c3843f323..1cf4d868107 100644
--- a/arch/arm/mach-at91/board-sam9m10g45ek.c
+++ b/arch/arm/mach-at91/board-sam9m10g45ek.c
@@ -366,6 +366,7 @@ static void __init ek_board_init(void)
at91_add_device_serial();
/* USB HS Host */
at91_add_device_usbh_ohci(&ek_usbh_hs_data);
+ at91_add_device_usbh_ehci(&ek_usbh_hs_data);
/* USB HS Device */
at91_add_device_usba(&ek_usba_udc_data);
/* SPI */
diff --git a/arch/arm/mach-at91/cpuidle.c b/arch/arm/mach-at91/cpuidle.c
new file mode 100644
index 00000000000..1cfeac1483d
--- /dev/null
+++ b/arch/arm/mach-at91/cpuidle.c
@@ -0,0 +1,94 @@
+/*
+ * based on arch/arm/mach-kirkwood/cpuidle.c
+ *
+ * CPU idle support for AT91 SoC
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * The cpu idle uses wait-for-interrupt and RAM self refresh in order
+ * to implement two idle states -
+ * #1 wait-for-interrupt
+ * #2 wait-for-interrupt and RAM self refresh
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/cpuidle.h>
+#include <asm/proc-fns.h>
+#include <linux/io.h>
+
+#include "pm.h"
+
+#define AT91_MAX_STATES 2
+
+static DEFINE_PER_CPU(struct cpuidle_device, at91_cpuidle_device);
+
+static struct cpuidle_driver at91_idle_driver = {
+ .name = "at91_idle",
+ .owner = THIS_MODULE,
+};
+
+/* Actual code that puts the SoC in different idle states */
+static int at91_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_state *state)
+{
+ struct timeval before, after;
+ int idle_time;
+ u32 saved_lpr;
+
+ local_irq_disable();
+ do_gettimeofday(&before);
+ if (state == &dev->states[0])
+ /* Wait for interrupt state */
+ cpu_do_idle();
+ else if (state == &dev->states[1]) {
+ asm("b 1f; .align 5; 1:");
+ asm("mcr p15, 0, r0, c7, c10, 4"); /* drain write buffer */
+ saved_lpr = sdram_selfrefresh_enable();
+ cpu_do_idle();
+ sdram_selfrefresh_disable(saved_lpr);
+ }
+ do_gettimeofday(&after);
+ local_irq_enable();
+ idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
+ (after.tv_usec - before.tv_usec);
+ return idle_time;
+}
+
+/* Initialize CPU idle by registering the idle states */
+static int at91_init_cpuidle(void)
+{
+ struct cpuidle_device *device;
+
+ cpuidle_register_driver(&at91_idle_driver);
+
+ device = &per_cpu(at91_cpuidle_device, smp_processor_id());
+ device->state_count = AT91_MAX_STATES;
+
+ /* Wait for interrupt state */
+ device->states[0].enter = at91_enter_idle;
+ device->states[0].exit_latency = 1;
+ device->states[0].target_residency = 10000;
+ device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(device->states[0].name, "WFI");
+ strcpy(device->states[0].desc, "Wait for interrupt");
+
+ /* Wait for interrupt and RAM self refresh state */
+ device->states[1].enter = at91_enter_idle;
+ device->states[1].exit_latency = 10;
+ device->states[1].target_residency = 10000;
+ device->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(device->states[1].name, "RAM_SR");
+ strcpy(device->states[1].desc, "WFI and RAM Self Refresh");
+
+ if (cpuidle_register_device(device)) {
+ printk(KERN_ERR "at91_init_cpuidle: Failed registering\n");
+ return -EIO;
+ }
+ return 0;
+}
+
+device_initcall(at91_init_cpuidle);
diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h
index 2f4fcedc02b..2295d80dd89 100644
--- a/arch/arm/mach-at91/include/mach/board.h
+++ b/arch/arm/mach-at91/include/mach/board.h
@@ -98,6 +98,7 @@ struct at91_usbh_data {
};
extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
extern void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data);
+extern void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data);
/* NAND / SmartMedia */
struct atmel_nand_data {
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 4028724d490..61566898648 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -29,62 +29,7 @@
#include <mach/cpu.h>
#include "generic.h"
-
-#ifdef CONFIG_ARCH_AT91RM9200
-#include <mach/at91rm9200_mc.h>
-
-/*
- * The AT91RM9200 goes into self-refresh mode with this command, and will
- * terminate self-refresh automatically on the next SDRAM access.
- */
-#define sdram_selfrefresh_enable() at91_sys_write(AT91_SDRAMC_SRR, 1)
-#define sdram_selfrefresh_disable() do {} while (0)
-
-#elif defined(CONFIG_ARCH_AT91CAP9)
-#include <mach/at91cap9_ddrsdr.h>
-
-static u32 saved_lpr;
-
-static inline void sdram_selfrefresh_enable(void)
-{
- u32 lpr;
-
- saved_lpr = at91_sys_read(AT91_DDRSDRC_LPR);
-
- lpr = saved_lpr & ~AT91_DDRSDRC_LPCB;
- at91_sys_write(AT91_DDRSDRC_LPR, lpr | AT91_DDRSDRC_LPCB_SELF_REFRESH);
-}
-
-#define sdram_selfrefresh_disable() at91_sys_write(AT91_DDRSDRC_LPR, saved_lpr)
-
-#else
-#include <mach/at91sam9_sdramc.h>
-
-#ifdef CONFIG_ARCH_AT91SAM9263
-/*
- * FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
- * handle those cases both here and in the Suspend-To-RAM support.
- */
-#define AT91_SDRAMC AT91_SDRAMC0
-#warning Assuming EB1 SDRAM controller is *NOT* used
-#endif
-
-static u32 saved_lpr;
-
-static inline void sdram_selfrefresh_enable(void)
-{
- u32 lpr;
-
- saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
-
- lpr = saved_lpr & ~AT91_SDRAMC_LPCB;
- at91_sys_write(AT91_SDRAMC_LPR, lpr | AT91_SDRAMC_LPCB_SELF_REFRESH);
-}
-
-#define sdram_selfrefresh_disable() at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
-
-#endif
-
+#include "pm.h"
/*
* Show the reason for the previous system reset.
@@ -260,6 +205,7 @@ extern u32 at91_slow_clock_sz;
static int at91_pm_enter(suspend_state_t state)
{
+ u32 saved_lpr;
at91_gpio_suspend();
at91_irq_suspend();
@@ -315,9 +261,9 @@ static int at91_pm_enter(suspend_state_t state)
*/
asm("b 1f; .align 5; 1:");
asm("mcr p15, 0, r0, c7, c10, 4"); /* drain write buffer */
- sdram_selfrefresh_enable();
+ saved_lpr = sdram_selfrefresh_enable();
asm("mcr p15, 0, r0, c7, c0, 4"); /* wait for interrupt */
- sdram_selfrefresh_disable();
+ sdram_selfrefresh_disable(saved_lpr);
break;
case PM_SUSPEND_ON:
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
new file mode 100644
index 00000000000..08322c44df1
--- /dev/null
+++ b/arch/arm/mach-at91/pm.h
@@ -0,0 +1,67 @@
+#ifdef CONFIG_ARCH_AT91RM9200
+#include <mach/at91rm9200_mc.h>
+
+/*
+ * The AT91RM9200 goes into self-refresh mode with this command, and will
+ * terminate self-refresh automatically on the next SDRAM access.
+ *
+ * Self-refresh mode is exited as soon as a memory access is made, but we don't
+ * know for sure when that happens. However, we need to restore the low-power
+ * mode if it was enabled before going idle. Restoring low-power mode while
+ * still in self-refresh is "not recommended", but seems to work.
+ */
+
+static inline u32 sdram_selfrefresh_enable(void)
+{
+ u32 saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
+
+ at91_sys_write(AT91_SDRAMC_LPR, 0);
+ at91_sys_write(AT91_SDRAMC_SRR, 1);
+ return saved_lpr;
+}
+
+#define sdram_selfrefresh_disable(saved_lpr) at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
+
+#elif defined(CONFIG_ARCH_AT91CAP9)
+#include <mach/at91cap9_ddrsdr.h>
+
+
+static inline u32 sdram_selfrefresh_enable(void)
+{
+ u32 saved_lpr, lpr;
+
+ saved_lpr = at91_sys_read(AT91_DDRSDRC_LPR);
+
+ lpr = saved_lpr & ~AT91_DDRSDRC_LPCB;
+ at91_sys_write(AT91_DDRSDRC_LPR, lpr | AT91_DDRSDRC_LPCB_SELF_REFRESH);
+ return saved_lpr;
+}
+
+#define sdram_selfrefresh_disable(saved_lpr) at91_sys_write(AT91_DDRSDRC_LPR, saved_lpr)
+
+#else
+#include <mach/at91sam9_sdramc.h>
+
+#ifdef CONFIG_ARCH_AT91SAM9263
+/*
+ * FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
+ * handle those cases both here and in the Suspend-To-RAM support.
+ */
+#define AT91_SDRAMC AT91_SDRAMC0
+#warning Assuming EB1 SDRAM controller is *NOT* used
+#endif
+
+static inline u32 sdram_selfrefresh_enable(void)
+{
+ u32 saved_lpr, lpr;
+
+ saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
+
+ lpr = saved_lpr & ~AT91_SDRAMC_LPCB;
+ at91_sys_write(AT91_SDRAMC_LPR, lpr | AT91_SDRAMC_LPCB_SELF_REFRESH);
+ return saved_lpr;
+}
+
+#define sdram_selfrefresh_disable(saved_lpr) at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
+
+#endif